Turbine.



0. W. STONE.

TURBINE.

APPLICATION FILED APR. 26. 1915.

Patented Oct. 26, 1915.

2 SHEETS-SHEET l.

I IlI 2 II III O .2. I II l I O 6/ I 2O 6/ 2 III I ,I f II, III, IIIII l I I I "nl" MM HNI' um) t IIIUII, I'I III, III 'IIIl E IIIII I COLUMBIA PLANoGR/.PH co.. WASHINGTON. D, C.

o. w. STONE.

TURBINE.

APPLICATION FILED APR. 26. 1915.

2 SHEETS-SHEET 2.

1 0u l 6l 2 LU. o 0 d Du t n e t a D1 PLANQG o.. WASHINGTON. D. c.

lUNlllllEll STATES PATENT h`hll@ht OLIVER W. STONE, OF SEATTLE, 'l/VASI-INGTON.

runfnrivn.

Application filed April 26, 1915.

To all whom t may concern Be it known that I, OLIVER W. S'ronn, citizen of the United States, and resident of Seattle, in the county of King and State of "Washington, have invented certain new and useful Improvements in Turbine-Em gines, of which the following is a specification.

My invention relates to turbine engines and consists of certain improvements which will be particularly defined hereinafter and in the claims.

The object of my invention is to simplify and improve the construction of devices of this character. y

ln the accompanying drawings l have shown my invention in the form which is non7 preferred by me.

Figure 1 is a horizontal axial section. F ig. Q is a side elevation with a portion of the casing broken away `and a corner or the cylinder in section. Fig. 3 is a transverse section taken on the line 3 3 of Fig. 1. Fig. 4l shows one of the stators in perspective. Fig. 5 is a. fragmentary longitudinal section showing the manner of securing the stators in place and the relation of the ports in the stators and the vanes in the rotors.

Upon a shaft 1 are mounted a series of rotors 2, these consisting essentially of a disk Which is fixed upon the shaft and has a section at or near to its outer edge provided with vanes or buckets 20 upon which the steam impnges to produce rotation. Alternating 'with these are the stators 3, these consisting of disks having ports 13 extend` ing therethrough at an angle and located to direct the steam passing therethrough upon the vanes 20.

The case 4 which includes the rotors and stators has a series of grooves Which receive the peripheries of the stators. Each stator is provided With a notch 31 and the case is provided with a similar recess 33 into which notch and recess is placed a locking key 3a whereby the stators are securely held in place. The stators are all provided with a centrall hole 35, which corresponds, at

least approximately With the hub 21, which is formed upon each rotor.

The peripheral surface of the hub 21 is trued up and slightly coned. Upon this is placed a packing ring 23, which is of metal and fits closely upon the coned surface. This ring is preferably cut across,

Patented 9ct. 26, 193i 5.

Serial No. 23,952.

as is shown in Fig. 3, and has a slight grip ping effect upon the coned surface of the hub. rllhe side surace of this ring bears upon the side surface of the stator'.` The gripping tension of the ring combined With the slightly coned surface of the hub causes suflicient sidewise moving tendency to cause the ring to bear against the `side surface of the ystator with sutlicient pressure to cause a tight joint.

rPhe radial extent of the vanes 20 of the rotors and of the ports 30 in the stators, as Well as the thickness of the ports 30 are varied in such Way as to increase the cross sectional area of the ports as the center of the turbine is approached. That is the area of the ports 30 is greater toward the center of the turbine than toward either end.

ln the assembling of the parts of the turbine a stator 3 is employed at each end of the se 1ies. At each end of the case a hea-d 4:1 is secured, this being shaped to form a chamber 4.2, which chamber serves alternately as a supply and exhaust chamber depending in its function upon the direction of rotation of the turbine.

The steam supply pipe Llli is provided With tivo branches 13 which extend each to its particular chamber 412 each of these branches is provided with a controlling valve 116, these valves as herein shown, being gate valves or opening and closing by a reciprocating movement. The supply pipe 44C is also provided with a controlling valve a5.`

Each of the chambers 4t2 is provided with an exhaust opening 47, the pipes 18 Which extend from these openings being provided With similar gate valves all), these pipes joining in a common exhaust pipe 39.

Mounted in bearings carried by the lower half of the case 51 is a shaft 5, which shaft is provided with four cranks 50, these cranks being positioned to correspond With the position of the four valves by which the steam and exhaust pipes are controlled. Each of these cranks is connected With its respective valve stem 53 by a connecting rod 52. Secured upon the shaft 5 is a beveled gear 511 which meshes with a pinion 55 carried by a shaft 56 upon Which is placed a hand Wheel 57 or other suitable connection by which it may be turned. The angular position of the various cranks 50, are such that when one of the valves 4G is closed the other is open and the same is truc of the valves 49. These are also so connected when the steam supply pipe for one end is closed the exhaust valve for the same end i'sropen. By proper control of these valves the steam may be passed through the turbine in reverse directions, thereby reversing the direction of rotation.

Each of the stators is provided with an oil hole 38 extending from its periphery to its center opening the casing may be provided with a corresponding hole and an oil cup 37, by means of which oil may be conducted to the center of the turbine, from. which point centrifugal action due to the ro tation of the rotor will conduct it outward andvkeep the surfaces thoroughly lubricated. The end stator of the series extends to the shaft and has bolts 6 screwed therein which pass through the outer wall of the member l-l which forms the supply chest. This supply chest has a central sleeve or hollow boss 61, extending to the face of the stator 3, into this passes a plunger 62 which serves as a follower for com ressino` aclrinff material placed in the hollow of the sleeve 61. The

bolts 6 extend outwardly and also pass through the flange of the follower 62. The outer end of this bolt is provided with two nuts, one bearing upon the member l-l and the other upon the follower 62.

Having thus described my invention, what I cla-im as new, and desire to secure by Letters Patent of the United States of America, 1s:

1. A steam turbine having a plurality of rotors provided with impact blades and stators alternating with said rotors and provided with fluid directing passages complemental to the impact blades, the area of said fyblades-and the passages in the rotors increasing from each end of the series toward the center, and [luid supply and discharge connections at the ends of the series.

2. A steam turbine having a plurality of rotors provided with impact blades and stators alternating with said rotors and provided with fluid directing passages complemental to the impact blades, the area of said blades and the passages in the rotors increasing from each end of the series toward the center, and means for passing the fluid through the series in either direction.

3. A steam turbine having a series of rotor disks mounted upon a common shaft and having Yanes lying in substantially axial planes, stators alternating with the rotors and having ports passing diagonally therethrough, said vanes and ports being spaced to register a plurality of ports with each space between vanes.

t. In a steam turbine in combination, a shaft, a plurality of rotors secured thereon, a casing inclosing said rotors, stators alternating with the rotors and supported by the casing, a hood closing each end of the casing to form steam supply and exhaust chests, a steam supply pipe and an exhaust pipe, each having branches connected with each of said chests and a controlling valve in each of said branches, a shaft extending lengthwise the casing and having four cranks thereon, links connecting each crank with its respective valve, and means for turning said shaft.

5. ln a steam turbine, a shaft, a series of rotors secured thereon, and having hubs provided with coned peripheral surfaces, stators extending inward to said coned surfaces, and a split spring packing ring mounted on said coned surfaces.

Signed at Seattle, lVashington this 20th day of April 1915.

OLVER lV. STONE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Y Washington, D. C. 

